Q:

The speed of sound in air at $0^{°}$ is

A) 331 m/s	B) 330 m/s
C) 330 ms	D) 331 ms

Answer & Explanation Answer: A) 331 m/s

Explanation:

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Filed Under: Physics
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Q:

The core of an electromagnet is made of soft iron because soft iron has

A) small susceptibility and small retentivity	B) large susceptibility and small retentivity
C) large density and large retentivity	D) small density and large retentivity

Answer & Explanation Answer: B) large susceptibility and small retentivity

Explanation:

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Q:

Select the antonym of

astringe

A) liberate	B) constringe
C) circumscribe	D) tauten

Answer & Explanation Answer: A) liberate

Explanation:

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Filed Under: English
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Q:

Rearrange the parts of the sentence in correct order.

Their judgment can be

P-easily swayed by false
Q-propaganda, as is being done
R-right now across the country

A) QRP	B) RPQ
C) PRQ	D) PQR

Answer & Explanation Answer: D) PQR

Explanation:

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Q:

The base of an electric iron is brightly polished mainly

A) to make it smooth and frictionless	B) to make it rust-proof
C) to reduce heat loss by radiation	D) to make it more durable

Answer & Explanation Answer: C) to reduce heat loss by radiation

Explanation:

Polished surfaces are poor radiators of heat. So loss of heat on that account is reduced and the electric iron remains hotter than otherwise.

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Q:

If a sum of money at simple interest doubles in 6 years, it will become 4 times in

A) 15years	B) 16years
C) 17years	D) 18years

Answer & Explanation Answer: D) 18years

Explanation:

let sum =x . s.i.=x

rate =(100*x)/(x*6)=50/3%

now ,sum =x, s.i= 3x, rate =50/3%

time =(100*3x)/(x*50/3) = 18 years

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Filed Under: Quantitative Aptitude - Arithmetic Ability
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Q:

Select the antonym of

magnate

A) mogul	B) tycoon
C) aristocrat	D) nonentity

Answer & Explanation Answer: D) nonentity

Explanation:

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Q:

CSMRS stands for

A) Central & State Ministry for Road Safety	B) The Central Soil and Material Research Station
C) The Central Soil & Mining Research Station	D) None

Answer & Explanation Answer: B) The Central Soil and Material Research Station

Explanation:

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Filed Under: General Awareness
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